TC: Handle device_register() errors.

Make the TURBOchannel driver bail out if the call to device_register()
failed.

Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6673/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
index a8aaf6ac2ae2..946562389ca8 100644
--- a/drivers/tc/tc.c
+++ b/drivers/tc/tc.c
@@ -129,7 +129,10 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus)
 
                 tc_device_get_irq(tdev);
 
-                device_register(&tdev->dev);
+                if (device_register(&tdev->dev)) {
+                        put_device(&tdev->dev);
+                        goto out_err;
+                }
                 list_add_tail(&tdev->node, &tbus->devices);
 
 out_err:
@@ -148,7 +151,10 @@ static int __init tc_init(void)
 
         INIT_LIST_HEAD(&tc_bus.devices);
         dev_set_name(&tc_bus.dev, "tc");
-        device_register(&tc_bus.dev);
+        if (device_register(&tc_bus.dev)) {
+                put_device(&tc_bus.dev);
+                return 0;
+        }
 
         if (tc_bus.info.slot_size) {
                 unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;